15023

NTE15023
Integrated Circuit
dbx TV Noise Reduction Integrated Circuit
Description:
The NTE15023 is an integrated circuit designed for the dbx–TV noise reduction decode circuit for multichannel TV sound systems. This device contains a voltage controlled amplifier, a variable de–emphasis circuit with new configuration and RMS detectors with completely integrated active band pass
filters, and offers the complete dbx–TV noise reduction decoder only with a few external components.
Features:
D Integrated Band Pass Filters using Active Filtering Technique and Thin Film Structure with
High Capacitance
D Variable De–emphasis Circuit with New Circuit Configuration
D Minimum Number of External Components
D Wide Operation Voltage Range: 4.7V to 16V
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Power Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17V
Allowable Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 715mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Recommended Operating Voltage:
Power Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V to 15V
Electrical Characteristics: (TA = +25°C, VCC = +9V Reference Level: 0dB = –5dBm (436mVrms)
unless otherwise specified)
Parameter
Consumption Current
Decode Characteristics
Symbol
Min
Typ
Max
Unit
No Signal
4.0
5.0
6.3
mA
Vod–1
Vi = –5dB, f = 300Hz
5.5
7.0
8.5
dB
Vod–2
Vi = –15dB, f = 300Hz
–14.5
–13.0
–11.5
dB
Vod–3
Vi = –30dB, f = 300Hz
–44.5
–43.0
–41.5
dB
Vod–4
Vi = 0dB, f = 1kHz
1.3
3.3
5.3
dB
Vod–5
Vi = –10dB, f = 1kHz
–19.4
–17.4
–15.4
dB
Vod–6
Vi = –20dB, f = 1kHz
–39.6
–37.6
–35.6
dB
Vod–7
Vi = 0dB, f = 8kHz
–4.3
–1.8
0.7
dB
Vod–8
Vi = –10dB, f = 8kHz
–30.9
–28.4
–25.9
dB
Vod–9
Vi = –20dB, f = 8kHz
–45.2
–42.7
–40.2
dB
ICC
Test Conditions
Electrical Characteristics (Cont’d): (TA = +25°C, VCC = +9V Reference Level: 0dB = –5dBm
(436mVrms) unless otherwise specified)
Parameter
VCA Filter Characteristics
Vemp. Filter Characteristics
Total Harmonic Distortion Ratio
Maximum Output Voltage
Symbol
Test Conditions
Min
Typ
Max
Unit
Vfp–1
f = 3kHz, Vi = 0dB, refer to 1kHz
–5.5
–4.0
–2.5
dB
Vfp–2
f = 8kHz, Vi = 0dB, refer to 1kHz
–13.0
–11.0
–9.0
dB
Vfg–1
f = 5kHz, Vi = 0dB, refer to 8kHz
–9.4
–7.4
–5.4
dB
Vfg–2
f = 2kHz, Vi = 0dB, refer to 8kHz
–32.3
–28.8
–25.3
dB
THD
f = 1kHz, Vi = –3dB
–
0.1
0.3
%
Vom–1
f = 300Hz, THD = 1.5%
11.0
12.5
–
dB
Vom–2
f = 8kHz, THD = 1.5%
–2.0
1.0
–
dB
–
–104
–80
dB
Output Noise Level
Von
Timing Current
Itime
(7.1)
7.5
(7.9)
µA
VCC/2
4.3
4.5
4.7
V
Center Potential
A weight
Electrical Characteristics: (TA = +25°C, VCC = +9V Reference Level: 0dB = –5dBm (436mVrms)
Note 1 unless otherwise specified)
Parameter
Consumption Current
Decoding Characteristics
300Hz, –5dB
300Hz, –15dB
300Hz, –30dB
1kHz, 0dB
1kHz, –10dB
1kHz, –20dB
8kHz, 0dB
8kHz, –10dB
8kHz, –15dB
VCA Filter Characteristics
3kHz
8kHz
Vemp Filter Characteristics
5kHz
2kHz
Total Harmonic Distortion Ratio
Maximum Output Voltage
300Hz
8kHz
Output Noise Level
Middle Point Potential
Symbol
Switch Condition
3
4
5
–
–
–
ICC
1
OFF
2
–
Vod–1
Vod–2
Vod–3
Vod–4
Vod–5
Vod–6
Vod–7
Vod–8
Vod–9
ON
ON
ON
ON
ON
ON
ON
ON
ON
–
–
–
–
–
–
–
–
–
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
Vfp–1
Vfp–2
ON
ON
a
a
a
a
Vfg–1
Vfg–2
THD
ON
ON
ON
b
b
–
Vom–1
Vom–2
Von
VCC/2
ON
ON
OFF
OFF
–
–
–
–
Note 1. It suffices that a or b is inserted into (–).
6
b
7
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
a
a
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
–
b
b
a
–
b
b
a
–
b
b
b
b
b
b
b
b
Pin Connection Diagram
VE TC 1
16 VE WGT
Detector Input 2
15 VE Input
REF 3
14 VE INT
Time 4
13 VE Output
VCA TC 5
12 VCA Input
VCA WGT 6
11 VCA FB
VCC 2 7
10 VCA Output
GND 8
16
9 VCC 1
9
.260 (6.6) Max
1
8
.785 (19.9) Max
.300 (7.62)
.200 (5.08)
Max
.245
(6.22)
Min
.100 (2.54)
.700 (17.7)
Similar pages